The Parker/Compumotor OEM300 Power Module is a dedicated power supply engineered to deliver regulated 75 VDC output to Compumotor OEM Series microstepping and servo drives within embedded motion control systems. It provides 2.7 A continuous and 4.0 A peak output, with integrated protection against over-temperature, short-circuit, and overvoltage conditions. A selectable dual-range AC input (90–132 VAC or 180–265 VAC via jumper) operates at 50/60 Hz. The module features an internal power dump circuit to manage regenerated energy and employs convection cooling via a heatplate design. Its compact footprint matches two OEM drive spaces, enabling efficient cabinet integration without standalone power supply overhead.
Technical Specifications
Electrical Performance
• Input voltage: 90–132 VAC (jumper installed) or 180–265 VAC (jumper removed); 50/60 Hz operation
• Forbidden input range: 132–180 VAC
• Output voltage: 75 VDC (fixed)
• Continuous output current: 2.7 A
• Peak output current: 4.0 A
• Continuous power: 200 W
• Peak power: 300 W
• Line filter included to minimize noise injection to AC mains
Protection & Thermal Management
• Over-temperature shutdown: 60°C (140°F) heatplate threshold; restart after cooling below 30°C (86°F) requires power cycle
• Short-circuit protection: Monitors drive current; automatic output shutdown on fault
• Overvoltage protection: Output shutdown on excessive voltage detection
• Internal power dump circuit dissipates regeneration energy
• Convection cooling via heatplate; adequate airflow required
Physical Design
• Mounting: Compatible with Compumotor OEM drive standard mounting
• Footprint: Equivalent to two OEM drives
• Metal frame construction
– Key Features
• Dual-range AC input selectable via jumper for worldwide deployment flexibility
• Fixed 75 VDC regulation for Compumotor OEM Series compatibility
• Multi-layer protection: over-temperature, short-circuit, and overvoltage safeguards
• Internal regeneration energy management eliminates external dump resistor requirement
• Space-efficient compact form factor for cabinet-mounted OEM systems
– Typical Applications
• Powering dual OEM650 drives with 83–135 step motors
• Supporting up to five OEM650 drives with 57–40 step motors
• Supplying OEM670 servo drives with servo motors up to 1/2 horsepower (373 watts)
– Compatibility & Integration
The OEM300 is purpose-designed for Compumotor OEM Series microstepping and servo drive architectures only. It is not a general-purpose power supply. Multiple OEM Series drives may be powered simultaneously provided total power demand does not exceed 200 W continuous or 300 W peak output.
